JPH043182Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The invention automatically shuts off the gas passage in the event of an emergency such as an earthquake, gas leak, or fire, and stops the gas supply to the secondary side. A gas stop remote control device with a start switch equipped with an automatic stop mechanism, which is an improved gas supply stop remote control device that remotely controls the opening and closing of the main opening/closing valve of an automatic safety valve to prevent secondary disasters caused by dangerous gas accidents. This is related to.

[Problems to be solved by conventional techniques and ideas]

The applicant has been working on the development of remote gas supply stop devices for many years and has developed various devices
No., Jitko No. 61-37908, Jitko No. 61-20371, Jitko No. 61-19256, etc.).

The present invention is particularly an improvement on Utility Model Publication No. 60-20867, ``Gas Supply Stop Remote Control Device,'' and provides a gas stop remote control device with a start switch that is equipped with an automatic stop mechanism and has improved practicality.

[Means to solve the problem]

The present invention will be described below with reference numerals used in the drawings for easy comparison with the drawings showing an example of implementation.

A main opening/closing valve 5 is interposed between the discharge port 2 of the gas supply source 1 and the gas supply hose 3, and the main opening/closing valve 5 opens only while being pressurized by a pressure medium through the pressure hose 4. The pressurizing operation of the on-off valve 5 is remotely controlled, and a cylinder tube 7 is installed inside a tank body 6 into which a pressure medium is injected, and a manual plunger 8 is slidably inserted into the cylinder tube 7. A check valve 10 for preventing backflow into the cylinder tube 7 is connected to the discharge port tube 9 of the cylinder tube 7, and a check valve 10 is provided on the side wall of the cylinder tube 7 so that the tank body is closed only when the manual plunger 8 moves back. A suction valve 11 is provided to suck the pressure medium in the cylinder 7 into the cylinder 7, and an operating chamber 12 is provided in the discharge port 9 of the cylinder 7 to communicate with the check valve 10. In the gas supply stop remote control device a, the gas supply stop remote control device a is provided with a connection joint 13 for connecting the pressurizing hose 4, and a sub-opening/closing valve 14 for opening and closing the operating chamber cylinder 12 and the inside of the tank body 6, in the operating chamber cylinder 12. A motor 16 is provided which is started by a push-in switch portion 15, a crank mechanism 17 is provided on the motor 16, and a motor-driven cylinder cylinder 19 connected to the cylinder cylinder 7 or the discharge port cylinder 9 at the tip of the crank arm 18 is provided. A slidable electric plunger 20 is provided, a connecting tube 21 is branched to the connecting joint 13, and the connecting tube 21 is connected to the push switch section 15.
Connected to the switch part cylinder tube 22 attached to the
A pressure-moving plunger 23 is slidably provided in the cylinder tube 22 of the switch portion, and when the main opening/closing valve 5 is forced to open by feeding a pressure medium, the push-in switch 15 is pushed back by the pressure-moving plunger 23. This invention relates to a gas stop remote control device with a start switch, which is equipped with an automatic stop mechanism and is characterized in that it is provided to stop the motor 16.

[Effect]

When the push-in switch part 15 is pushed in, the motor 16 is started, the crank mechanism 17 is operated, and the electric plunger 20 provided at the tip of the crank arm 18 slides back and forth within the electric cylinder cylinder 19.

By sliding the electric plunger 20 forward, the pressure medium is forced from the electric part cylinder tube 19 to the cylinder tube 7 or the discharge port tube 9, passes through the check valve 10, is forced to the operating chamber tube 12, and is forced to close the connection joint 13. The water is then fed under pressure to the main on-off valve 5 via the pressurized hose 4.

When the electric plunger 20 moves rearward, the check valve 10 prevents backflow from the pressurizing hose 4 to the cylinder tube 7, and the suction valve 11 sucks the pressure medium from inside the tank body 6.

Therefore, the pressure medium is sequentially fed to the pressurizing hose 4 by the back-and-forth sliding movement of the electric plunger 20, and the pressure medium is sequentially fed to the pressurizing hose 4, and the pressure medium is transferred to the discharge port 2 of the gas supply source 1 and the gas supply hose 3.
The main on-off valve 5 between the main opening and closing valve is pressurized and opened.

At the same time, the pressure medium is force-fed to the main on-off valve 5, and is also force-fed to the switch cylinder cylinder 22 via the connecting pipe body 21 branched from the connecting joint 13, pressing the pressure-dynamic plunger 23, and the main on-off valve 5 opens. When the push-in switch part 15 is pushed back, the motor 1
6 is stopped.

When an emergency occurs, when the sub-on-off valve 14 is opened, the pressure medium flows back into the tank body 6 through the main on-off valve 5, the main on-off valve 5 is closed, and the gas supply is cut off.

Close the auxiliary on-off valve 14 again and press the push switch part 1.
5 to start the motor 16, the main on-off valve 5
opens.

Also, the manual plunger 8 can be manually moved to the cylinder tube 7.
The main opening/closing valve 5 may be opened by sliding the inside of the main opening/closing valve 5 and feeding the pressure medium to the pressurizing hose 4.

〔Example〕

The main on-off valve 5 of this embodiment is of a diaphragm type as disclosed in Japanese Utility Model Application No. 54-153035 by the present applicant. It opens to supply gas to the gas supply hose 3 only when the pressure medium is removed, and closes to stop supplying gas to the gas supply hose 3. Further, the manual plunger 8 is moved back by the spring 24,
The manual plunger 8 is connected to the operating lever 2 via a link mechanism consisting of a fulcrum pin 25, a link plate 26, an operating lever 27, a connecting plate 28, and a connecting pin 29.
It is pressed down by three push rods that descend by swinging the lever 7 downward.

Furthermore, antifreeze is most suitable as the pressure medium.

The check valve 10 of this embodiment is composed of a valve body 31, an opening/closing plate 32, a spring 33, and a discharge hole 34. When the manual plunger 8 is pressed down, the opening/closing plate 32 is moved to the spring 33 by the pressure medium. is pushed down against the pressure, the discharge hole 34 opens, and the pressure medium flows out into the working chamber cylinder 12. On the other hand, when the pressure medium has finished being discharged from the discharge port cylinder 9, the discharge hole 34 is closed by the spring 33,
This is to prevent backflow into the cylinder tube 7.

The suction valve 11 of this embodiment is composed of a valve body 35, a valve seat 36, a ball 37, and a suction hole 38. When the manual plunger 8 presses down, the ball 37 is moved by the pressure medium in the cylinder tube 7. Valve seat 3
When the manual plunger 8 rises, the ball 37 rises and sucks the pressure medium in the tank body 6 through the suction hole 38.

Further, the sub-opening/closing valve 14 of this embodiment has an operating chamber cylinder 12.
A sub-opening/closing valve knob 40 has an operation pin with a head that is screwed onto the valve body 39 and is slidably inserted through a valve main body 39 having a communication hole in the center (not shown) through a communication gap. , a reflux pipe 60 that communicates with the tank body 6 through this communication hole, and a hook-shaped L-shaped locking groove 42 that engages with a lock pin 41 protruding from the outer periphery of the valve body 39. Secondary on-off valve knob 40
When the locking pin 41 is locked in the locking groove 42 by pushing and rotating, the communication gap, the communication hole, and the circulation pipe 60 are brought into communication, and the opening operation is performed.

Reference numeral 43 is an ordinary pressure reducing valve, and 44 is a pressure gauge.

Next, the starting switch mechanism equipped with an automatic stop mechanism, which is the main part of the present invention, will be explained in detail.

A movable electrode plate 47 is supported by a spring 48 and stands upright on a slide body 46 that slides by a push switch knob 45. When the push switch knob 45 is pushed in, the slide body 46 moves forward and falls forward by the spring 27. The switch circuit 50 is connected to the upper electrode 49 to start the motor 16, and the slide body 25 is placed in a position opposite to the push-in switch knob 45 with the slide body 25 in between.
A push-back knob 51 is provided opposite to push back the push-in switch knob 45 that has been slid and pushed in the opposite direction, and the tip of a pressure-moving plunger 23 protruding from inside the switch cylinder 22 is disposed on this push-back knob 51. It is something.

Further, a gear 54 is attached to a motor gear 53 attached to a motor rotating shaft 52 protruding below the motor 16, an eccentric plate 55 is provided to this gear 54, a crank arm 18 is provided to this eccentric plate 55, and this crank arm The proximal end of an electric plunger 20 slidably provided in an electric cylinder tube 19 communicating with the discharge port tube 9 is connected to the tip of the plunger 18 .

In addition, the connecting pipe body 21 is vertically branched to the connecting joint 13 and connected to the base end of the cylinder tube 22 of the switch part, and when the motor 16 is operated, pressure medium is sent under pressure from the pressurizing hose 4 to the main on-off valve 5. When the main on-off valve 5 is completely opened, the switch part cylinder tube 2
Sufficient pressure medium is also force-fed to 2 to push the pressure-moving plunger 23 against the spring 62, and push back the knob 5.
1 to press the slide body, push switch knob 45
The switch circuit 50 is designed to be turned off by pushing back the movable electrode plate 47 in the opposite direction toward the non-conducting material 56.

In addition, in this embodiment, in the middle of the gas supply hose 3,
A shutoff valve 57 disclosed in Japanese Utility Model Application No. 55-109181 by the present applicant is interposed, that is, it is of a diaphragm type, and the gas supply to the gas range 58 is
Even if the main valve of the gas supply source 1 is closed and then reopened, the system will stop, and if the knob 59 is pulled up, the gas will continue to be supplied.
This was designed to prevent future disasters.

This device also includes a device devised by the applicant that automatically causes pressure medium to flow back through the main on-off valve 5 in the event of a gas leak or an earthquake (Utility Model Publication Act 1983-
20371) should be added. Reference numeral 61 is this connecting pipe.

[Effect of idea]

Since the present invention is configured as described above, by simply pushing the push-in switch part, the pressure medium can be automatically fed to the main on-off valve via the pressurizing hose to automatically open the main on-off valve, and the predetermined pressure is reached to open the main on-off valve. This is a gas stop remote control device with a start switch that is equipped with a highly practical automatic stop mechanism that automatically pushes the push switch part in the opposite direction and turns off the motor when the push switch part is pushed back.

In addition, the present invention is a gas stop remote control device that fully fulfills the conventional functions.In the event of an unexpected accident, it can automatically shut off the gas flow in a remote location by opening the auxiliary on-off valve, even if electricity is unavailable. This is a gas stop remote control device with a start switch that is equipped with a highly practical automatic stop mechanism that ensures control using a manual plunger even in the event of a power outage.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is a front sectional view of the main part, Fig. 3 is a side sectional view of the main part, and Fig. 4 is a schematic explanatory diagram. be. DESCRIPTION OF SYMBOLS 1... Gas supply source, 2... Discharge port, 3... Gas supply hose, 4... Pressure hose, 5... Main on-off valve, 6... Tank body, 7... Cylinder tube, 8...
...Manual plunger, 9...Discharge port tube, 10...Check valve, 11...Suction valve, 12...Operation chamber tube, 13
... Connection joint, 14 ... Sub-opening/closing valve, 15 ... Push switch part, 16 ... Motor, 17 ... Crank mechanism, 18 ... Crank arm, 19 ... Electric part cylinder cylinder, 20 ... Electric plunger, 21...
Connection pipe body, 22...Switch part cylinder tube, 23
...Pressure powered plunger.

Claims (1)

[Scope of utility model registration request] A main on-off valve that opens only while being pressurized by a pressure medium through the pressure hose is interposed between the discharge port of the gas supply source and the gas supply hose, and the main on-off valve is pressurized. The operation is controlled remotely, and a cylinder tube is installed inside the tank body into which pressure medium is injected, and a manual plunger is slidably installed inside this cylinder tube, and a manual plunger is installed in the discharge port tube of this cylinder tube. A check valve is installed in series to prevent backflow into the cylinder, and a suction valve is installed on the side wall of the cylinder to suck the pressure medium in the tank body into the cylinder only when the manual plunger moves back. , an operating chamber tube communicating with the check valve is provided in the discharge port tube of the cylinder tube, a connecting joint for connecting the pressurizing hose is attached to the operating chamber tube, and the operating chamber tube and the tank body are attached to the operating chamber tube. In a gas supply stop remote control device that is provided with a sub-opening/closing valve that opens and closes the inner and An electric plunger is provided in a slidable manner in an electric part cylinder cylinder communicating with the outlet cylinder, a connecting pipe body is branched to the connecting joint, and this connecting pipe body is connected to the switch part cylinder cylinder attached to the push switch part. A pressure-driven plunger is slidably provided in the cylinder of the switch section, and when the main opening/closing valve is forced to open by sending a pressure medium, the push-in switch section is pushed back by the pressure-motion plunger and the motor is activated. A gas stop remote control device with a start switch and equipped with an automatic stop mechanism, characterized in that it is provided to stop the gas.